Interlocking pile.



P. F'. Kim/N.

Nrmocxms ma.

RENEWED AUG.` 2l, 1915. l

Patented Apr. 11, 1916.

APPlCATvUN HLEU Mf'aY S, 1993. fl-7mm.

ill

INTERLOCKI'NG PILE.

Specification of Letters Patent.

Application led May 8, 1913, Serial No. 766,425. Renewed August 21, 1915. Serial No. 46,672.

To all lwhom t may concern.'

lie/it known that I, PETER F. KEELYN, a citizen of the United States. and resident ot' Milwaukee, in the county of Milwaukee and State of lllisconsin, have invented certain new and useful Improvements in Interlocking Piles; and I do hereby declare that the following is a full, clear, and exact description thereof.

The object of my invention is to provide a simple, economical and durable interlocking cement pile, its construction and arrangement being such lthat the tongue-andgroove members are molded with la .permar/nent sheathing to present a smooth' surface between said members, wherebyffriction is reduced to a minimum in'driving the piles, the said` piles being molded with conical driving ends to facilitate'their' drive.

Specific objects ofgmy invention jare to provide the tongue-and-groove sheathings with inwardly extending flanges, whereby said sheathings are anchored within the body of the pile; to provide said sheathings either in continuous sections or at interruptedeintervals throughout the length of the pile, and to provide, in instances where the sheathings are interrupted, transversely disposed angle-iron stay-plates between the sheathing ,sections to add strength and rigidity to the piles in a transverse direction.

I-am aware that piles of the tongue-andgroove interlocking type have vbeen formed i heretofore, but in such instances these piles have been entirely incased and molded within metallic jackets, which construction is more or less expensive and requires various steps in the art of building the piles aside from the excess quantity 'of sheathing required. By making a pile having its tongueand-groove only sheathed the cost is materially reduced, while atthe same time its strength is unimpaired and the semisheathed parts accomplish the general result required in piles of this character as the function of the sheathing is to present a smooth surface in sliding the tongue-andgroove members together. Furthermore piles having a semi-sheathing as described lcan be molded more cheaply due to the fact that the sheathing strips are simply set into the mold with flanges arranged to cause interlocking or anchorage of said sheathing members.

With the above objects in view theinvention consists in certain peculiarities of constructionA ,and combination of parts as set forth lhereinafter with reference to thc accompanying finaal-ugs and subsequentl'x-y claimed.

In the dra wing-1 Figure l represents a. side elevation o' a cement pile cmbodviug the features of my invention :v Fig. 2, a ciro, section of the same, the section rbeing indicated by line 2-2 of Fig. 1; Fig. ifa side elevation of another form of pile embodying the features of my invention; Fig. l, cross-section. oi the same, the scctionwbeingr taken upon line 4,--1 of Fig. 3; Fig. 5, an@ other cross-section of the same, the plane ci' which is indicated by line 5---5 of Fig. and Fig. 6, a. longitudinal sectional view of a modified form of pile, the section being indicated by line (--t of Fig. i

Referring by characters to the drawings, 1 represents a circular body at a cement pile provided with a longitudinally disposed tongue 2 projecting beyond the lairlv thereof, and 3 represents a longitudinally disposed groove which is formed Within. the contour of said body portion. The pile is suitably provided with stay-rods l of any desired form, which stay-rods constitute no part of my invention. The tongue 2 is provided with a longitudinally disposed metallic sheathing strip 4, which strip follows the contour of the tongue and extends about the outer diameter of the pile for a slight distance upon either side of the tongue portion at which terminal points the sheathing is'bent inwardly to form retaining flanges ifa l cui-cel .lapin 1li, 1916i. y

5, the same being embedded within the body 'i ofthe pile as best shown in Fig. 2, and are extended toward the pile axis. The groove 3 is also provided witha similar sheathing strip ti1 having side portions 6 that follow the contour of the pile and terminate with inwardly extending flanges 7, which flanges correspond with the flanges 5 of the tongue sheathing and are embedded within said. pile. These sheathing strips, as shown 'in Fig. 1, are continuous in this instance and serve to present smooth surfaces for driving engagement between the tongue-andgroove members of interlocked piles and incident-ally also serveto strengthen said. tonglie-and-grooves. In practice the piles are formed by molding in the ordinary man-- ner and prior to pouring the cement the Q Liestal vwhereby they are anchored to constitute a practically integral part of the pile. after the same have been cured.

Figs. 3 to 6 inclusive illustrate a modified form of pile wherein the same is shown rectangular in cross-section. In this instance the tongue-and-groove 8. t), respectively, are provided with sheathing sections 10, ll, respectively, which sheathing sections have h'anges 12 that project within the body of the pile in a similar manner to the flanges previously mentioned in connection with the circular form of pile. These sections 8, and 9, however, are spaced apart at predetermined distances, whereby the cement surface of the tongue-and-grooves are exposed at intervals, but this exposure will not affect the driving operation due to the fact that the sheathing sections are such distance apart that they will form smooth contact faces in driving engagement with the sheathed tongueandgrooves of opposite piles.

As shown, when the piles are equipped with'interrupted sheathing strips they may be provided with transversely disposed stay-plates 13, which stay-plates are molded within the body of the pile upon that side thereofI containing the groove 9. rllhese stay-plates are cut away to conform to the dovetailed contour of the groove, the base line of the cut-away vportion being bent 11pwardly in the form of a rib 14, while the surface edge of said stay-plates are formed with downwardly extending front flanges 14. The rear embedded edge of the stayplate is also provided with an upwardly eX- tending flange 14, whereby the stay-plate is stiffened and the pile rendered more rigid in a transverse direction.

From the foregoing description it is obvious that a pile made in accordance with my invention wherein an `ncomplete sheath' ing for the pile is employed, is cheaper to manufacture than a completely sheathed pile and can be as eectually operated in building a wall, the piles being preferably formed with conical driving ends 15,

whereby they can be forced into place with the least resistance.

ll'hile I have shown and described a pile that is circular in cross-section and one hat is rectangular in crosssection, it is apparent that piles can be made in polygonal form without departingl from tle spirit of my invention.

I claim l. An interlocking concrete pile having a longitudinally disposed tongue and groove, and a metallic sheathing for said tongue and groove, the sheathing being provided with obliquely disposed terminal flanges extending into the body of the pile in juxtaposition to the longitudinal edges of the aforesaid tongue and groove.

2. An interlockingT pile having a longitudinally disposed tongue and groove, thx` tongue and groove being provided with a metallic sheathing that terminates adjacent to the edges of thetongue and groove whereby the major portion of the pile surface is exposed, means for securing the terminal edges of the sheathing to the body of the pile.

3. An interlocking concrete pile having a tongue and groove, a metallic sheathing for the tongue and groove, the same being uninterrupted throughout their length, the tongue and groove sheathings being provided with obliqucly disposed terminal flanges that extend into the body of said pile.

4. An interlocking concrete pile having a metallic sheathed tongue and groove, and transverse angle-iron plates intersecting the pile groove, the same being cnt away to conform to the cross-section outline of said groove.

In testimony that I claim the foregoing i have hereunto set my hand at Milwaukee in the county of Milwaukee and State of Vlis-- consin, in the presence of two witnesses.

PETER F. KEELYN. 1Viitnesses:

Gino. W. YOUNG, M. E. DowNEY. 

